rowley



I. F. ROWLEY.

HINGE JOINT FOR ARTIFICIAL LIIVIBS.

APPLICATION FILED MAR. 27. I919- laten'ted Nov. 18, 1919 IIIIIIIIIIIII II; I

HINtS'rIE-JUIIMT hlllft lllft'l I rese lers.

Application filed March 221?, 153.9.

To all whom it may concern lle it known that l, dimes F. ROWLEY, a.citizen of the United ,dtates of lliniericu, and n resident of Chicago,count of (look, and Shite of l llinois have invented. certnin new anduseful Improvements in Hinge Joints for Artificial Limbs, of which thefol-- lowing is a spwificntion.

This invention relates to ankle joints, for artificial limbs, of thekind shown in my Patent No. 1,090,881, dated lvllarch EZ-l, 1.91.4.

The main object of this invention is to provide an improved constructionof such an ankle thereof and substantially reduce its Weight and cost.

Bin illustrative embodiment of this inven tion is shown by theaccompanying drewinns, in WlllCl1- Figure 1 is a side elevation of anankle joint eonstri'lcted in accordance With this invention.

Fig. 2 of the Fig. rte. s.

Fig. 4: is a detail of the rod or shank which supports the'bearingontheshin section.

Fig. 5 is a detail of the tubular member which is supported on saidshank.

Fig. 6 is a vertical section of an ertilieiel :toot, showing theimproved joint t5 epplicd thereto. I

lln iny prior Patent, No. 1,090,881, the hearing member and the boltshiinlewhereby it is attached to the leg section of the. ficial limb, ismade of s drop-forging in one piece and is thereafter hored out totubular form and has its ends turned to cylindrical form concentric withthe here. ld r employinn commercial tubing to form member, severaloperations required in the manufacture of the former construction areavoided, and the resulting device is consid erably strength.

is n longitudinal SBC'tlOllttli detail same.

3 is a. View tslren from. the right ot The specific ernhodiment hereinillustrated comprises at pair of members 1. and 2 er ranged one Withinthe other and secured to the bolt shanks or rods 3 end t respectively.Roller hearings 5. seated in hell rnces ti termed in the member 2,provide for on ensy, noiseless Working of the joint.

Specification of Letters Patent.

joint to simplify the manufacture.

its the rings cool oll' they contr:

the hearing lightened Without effecting Lit-1171211 lilo. Etlli,tit)ll.

The tnhnlnr hearing nieinher ii. enti-ino u yond the ends of the member52 so A provide Widely spaced rocker hearings ii strengthen and.stabilizes the joint s side strnins, and ilso to provide poo into whichn quantity of lubricant. placed to insure proper hihriention oi. jointthrongl out the life of the limb.

The speciol store of this invention particular constriurtion oi? theshunlr i its connection to the illliltlltal heurii her 1. Einid shrinkp. ercrhly e dr l for, inp; toriiied with a. torlr it the end which oreenlarged and tlnttened end d out so as to provide eyes or rings 9 apartand :ilined at right en", es shunlt. 'lhe bores 10 of the 9 mode asnearly as possible the some the exterior diznneter of the tuhnlrnimember1.

The shnnlr 3 is secured to the member fl. hy' heating the rings 9 so itsto expend the some and pern'iit the tube to he slipped ii since. end

firmly grip the member 1..

The shzinlr t is threaded end s Wed into the threaded opening; 'l'l. inthe inner meniber 2, A peripheral slot :lorined in the tuhulnr .rneniher1 between the rings l, to receive the shsnl-t 4t- :ind permit it to havethe required nnionnt or? annular moves-lent reletire to the inen'iberAlthough hot one sijiecific embodiment oi. this invention has beenherein shown and described, it Will he undi nod thnt nu-- rneronsdetails of the construction shown n-ltered or omitted Without depzirtinpmay he tron] the spirit of this invention es by the following claims.

ll. claim:

1. ll. joint for urtiilicinl lirnhs, n benrin tuhe transversely slotdizrte its ends, it l nirinp; ineinler stu mounted- Within said tuhe and.ilttt' shrink eritending through the slot in A tuhe, end: it rod torl'.d ttl; one end, snid torlred end being shsped and error embrace saidtube st opposite sid slot therein with said rod in redi thereto.

2. lln a. oint for artificial liinhs, the con1-- hinetion of it rodhztrin on eye ll't one end thereof, it sepurnte ihulnr henrinp;inernhei" secured to said rod W1 hin snid eye, 21 second ll iii lltltlll ll ti member rotatably mounted Within said bearing member and ashankattached to said second mem er.

3. In a joint for artificial limbs, the combination of a rod having apair of eyes integrally formed thereon at one end and spaced apart, atubular member attached to said rod within said eyes, a second memberrotatably mounted Within said tubular memher, and a shank attached tosaid second 10 member.

Signed at Chicago this 25th day of March, 1919.

J AMES F. ROXVLEY.

